:root {
  --bg-dark: #040a12;
  --bg-card: rgba(13, 27, 46, 0.7);
  --bg-card-hover: rgba(20, 40, 68, 0.85);
  --border-glow: rgba(0, 210, 255, 0.25);
  --border-dim: rgba(255, 255, 255, 0.08);
  --accent-cyan: #00d2ff;
  --accent-blue: #3a86ff;
  --text-main: #f0f4f8;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  --font-mono: 'DM Mono', monospace;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
}

body {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Background FX */
.page-glow {
  position: fixed;
  top: -20vh;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 80vh;
  background: radial-gradient(circle, rgba(0, 210, 255, 0.08) 0%, rgba(58, 134, 255, 0.03) 40%, transparent 70%);
  pointer-events: none;
  z-index: -2;
}

.page-grid {
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: -1;
}

/* Navigation */
.site-nav {
  position: sticky;
  top: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 5%;
  background: rgba(4, 10, 18, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-dim);
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
}

.brand-mark {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  color: #000;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.brand-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 24px;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--accent-cyan);
}

/* Layout Core */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.section {
  margin-top: 100px;
}

.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--accent-cyan);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.section-heading {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  align-items: end;
  margin-bottom: 40px;
}

.section-heading-main {
  display: flex;
  flex-direction: column;
}

.section-heading h2 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.section-heading p {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.6;
}

/* Surface Cards */
.surface-card {
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(8px);
  transition: var(--transition);
}

.surface-card:hover {
  border-color: var(--border-glow);
  box-shadow: 0 8px 32px rgba(0, 210, 255, 0.05);
}

/* Hero Section */
.hero {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 40px;
  align-items: center;
  padding-top: 40px;
}

.hero-copy h1 {
  font-family: var(--font-heading);
  font-size: 3rem;
  line-height: 1.15;
  font-weight: 700;
  margin: 12px 0 20px;
  letter-spacing: -0.03em;
}

.hero-text {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
}

.button-primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  color: #000;
  border: none;
}

.button-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border-color: var(--border-dim);
}

.button-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-cyan);
}

.button-ghost {
  background: transparent;
  color: var(--text-muted);
}

.button-ghost:hover {
  color: var(--text-main);
}

.button-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-dim);
}

.button-sm:hover {
  border-color: var(--accent-cyan);
}

.signal-strip {
  display: flex;
  gap: 20px;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
}

.signal-strip li::before {
  content: "▸ ";
  color: var(--accent-cyan);
}

/* Status Panel */
.panel-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.panel-kicker {
  color: var(--accent-cyan);
  text-transform: uppercase;
}

.panel-coordinate {
  color: var(--text-dim);
}

.status-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.status-card {
  padding: 16px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent-blue);
}

.status-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  text-transform: uppercase;
}

.status-card h2 {
  font-size: 1.1rem;
  margin: 4px 0;
}

.status-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Signal Band */
.signal-band {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 60px;
}

.signal-card h2 {
  font-size: 1.2rem;
  margin: 6px 0;
}

.signal-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.signal-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
}

/* Projects Grid */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.project-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-cover {
  width: 100%;
  height: 180px;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 16px;
  background: #000;
}

.project-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.project-card:hover .project-cover img {
  transform: scale(1.05);
}

.project-cover--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #10233d 0%, #081525 100%);
  border: 1px solid var(--border-dim);
}

.project-cover--placeholder span {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.project-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  background: rgba(0, 210, 255, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 210, 255, 0.2);
  text-transform: uppercase;
}

.project-date {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.project-card h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin-bottom: 12px;
}

.project-tags li {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.project-copy {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  flex-grow: 1;
}

.project-link {
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.project-link::after {
  content: "→";
  transition: transform 0.2s ease;
}

.project-link:hover::after {
  transform: translateX(4px);
}

/* Updates / Devlog Layout */
.updates-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.subheading-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-dim);
}

.subheading-row h3 {
  font-size: 1.2rem;
  font-weight: 600;
}

.subheading-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.feed-link {
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.feed-link:hover {
  opacity: 0.8;
  text-decoration: underline;
}

.updates-list, .video-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Reddit & YouTube Collapsible Drawers */
.reddit-collapsible-wrapper,
.youtube-collapsible-wrapper {
  transition: max-height 0.35s ease, opacity 0.3s ease;
  max-height: 2500px;
  opacity: 1;
  overflow: hidden;
}

.reddit-collapsible-wrapper.is-collapsed,
.youtube-collapsible-wrapper.is-collapsed {
  max-height: 0;
  opacity: 0;
  pointer-events: none;
}

/* Video Collapsible Categories */
.video-category-accordion {
  margin-bottom: 16px;
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  overflow: hidden;
}

.category-toggle-btn {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.02);
  border: none;
  color: var(--text-main);
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.category-toggle-btn:hover {
  background: rgba(0, 210, 255, 0.05);
  color: var(--accent-cyan);
}

.category-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.category-count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
}

.toggle-icon {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--accent-cyan);
}

.category-content {
  padding: 0 16px;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  pointer-events: none;
  transition: max-height 0.35s ease, opacity 0.3s ease, padding 0.35s ease;
}

.category-content.is-expanded {
  max-height: 3000px;
  opacity: 1;
  padding: 16px;
  pointer-events: auto;
}

.update-card h3, .video-card h3 {
  font-size: 1.05rem;
  margin: 8px 0;
}

.update-card p, .video-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.video-embed {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 12px;
}

.video-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-thumb {
  display: block;
  width: 100%;
  height: 160px;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 12px;
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* About Layout */
.about-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.about-card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
  color: var(--accent-cyan);
}

.skill-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.skill-list li {
  font-size: 0.9rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.skill-list li::before {
  content: "•";
  color: var(--accent-cyan);
}

.quote-card p {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--text-main);
  line-height: 1.4;
}

/* Contact Layout */
.contact-layout {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 32px;
}

.contact-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-card label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.contact-card input,
.contact-card textarea {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  padding: 12px;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: var(--transition);
}

.contact-card input:focus,
.contact-card textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 12px rgba(0, 210, 255, 0.15);
}

.contact-links-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-links-card a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: var(--transition);
}

.contact-links-card a:hover {
  color: var(--accent-cyan);
}

.helper-copy {
  font-size: 0.85rem;
  color: var(--accent-cyan);
  margin-top: 8px;
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Footer */
.site-footer {
  margin-top: 100px;
  padding: 40px 5%;
  border-top: 1px solid var(--border-dim);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--text-dim);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--accent-cyan);
}

/* Responsive Breakpoints */
@media (max-width: 900px) {
  .hero, .updates-layout, .contact-layout, .section-heading {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .hero-copy h1 {
    font-size: 2.2rem;
  }

  .site-nav {
    flex-direction: column;
    gap: 16px;
  }
}